/**
 * Grid3 Style Helpers
 *
 * Utilities for creating and managing Grid3 styles, including default styles,
 * style XML generation, and style conversion utilities.
 */
/**
 * Cell background shapes supported by Grid 3
 * Maps to Grid 3's CellBackgroundShape enum
 */
export declare enum CellBackgroundShape {
    Rectangle = 0,
    RoundedRectangle = 1,
    FoldedCorner = 2,
    Octagon = 3,
    Folder = 4,
    Ellipse = 5,
    SpeechBubble = 6,
    ThoughtBubble = 7,
    Star = 8,
    Circle = 9,
    ColouredCorner = 10
}
/**
 * Human-readable shape names
 */
export declare const SHAPE_NAMES: Record<CellBackgroundShape, string>;
/**
 * Grid3 Style object structure
 */
export interface Grid3Style {
    BackColour?: string;
    TileColour?: string;
    BorderColour?: string;
    FontColour?: string;
    FontName?: string;
    FontSize?: string | number;
    BackgroundShape?: CellBackgroundShape;
}
/**
 * Default Grid3 styles for common use cases
 * Colors are in 8-digit ARGB hex format (#AARRGGBBFF)
 */
export declare const DEFAULT_GRID3_STYLES: Record<string, Grid3Style>;
/**
 * Category-specific styles for navigation and organization
 */
export declare const CATEGORY_STYLES: Record<string, Grid3Style>;
/**
 * Re-export ensureAlphaChannel from colorUtils for backward compatibility
 * @deprecated Use ensureAlphaChannel from colorUtils instead
 */
export { ensureAlphaChannel } from './colorUtils';
/**
 * Create a Grid3 style XML string with default and category styles
 * @param includeCategories - Whether to include category-specific styles (default: true)
 * @returns XML string for Settings0/styles.xml
 */
export declare function createDefaultStylesXml(includeCategories?: boolean): string;
/**
 * Create a custom category style
 * @param categoryName - Name of the category
 * @param backgroundColor - Background color in hex format
 * @param fontColor - Font color in hex format (default: white)
 * @returns Grid3Style object
 */
export declare function createCategoryStyle(categoryName: string, backgroundColor: string, fontColor?: string): Grid3Style;